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TFE731 Turbofan Engine

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TFE731 Turbofan Engine

Multiple TFE731 models offer 3,500 to 5,000 pounds of thrust, backed by more than 100 million flight hours of proven experience, performance, and reliability.

Overview
Compatible Aircraft

Our TFE731 family of engines has a legacy of proven reliability.

The first TFE731 was certified in 1972. Since that time, 20 different models with more than 13,000 units have been produced, logging an astounding 100 million plus hours of service on more than 30 different aircraft applications. The TFE731 gives you everything you want in an engine with proven experience, performance, and reliability.

Though most people would be satisfied with the performance of the legendary TFE731 turbofan engine, our engineers have continued to make engine improvements. In fact, for the TFE731-50R engine, they made 70 improvements to the already robust engine, including improved core and low-pressure spool technologies, new digital electronic engine control (DEEC) and a complete nacelle and thrust reverser system.

These changes resulted in greater versatility, dramatically improved temperature margins, a better lapse rate than the TFE731-5BR and, depending on altitude condition, up to eight percent better specific fuel consumption (SFC).

Turbofan Comparison

Model	Engine Type	Market	Parameter
			Max Envelope Diameter		Length		Takeoff Thrust
			inch	cm	inch	cm	Sea Level (lbf)
TFE731-2	Turbofans	Business Jet / Military Trainer	39.4	100.1	59.9	152.1	3500
TFE731-3	Turbofans	Business Jet / Military Trainer	39.4	100.1	59.9	152.1	3700
TFE731-4R	Turbofans	Business Jet	39.4	100.1	60.2	152.9	4080
TFE731-5R	Turbofans	Business Jet	40.5	102.9	65.6	166.6	4500
TFE731-5AR	Turbofans	Business Jet	40.5	102.9	91.1	231.4	4500
TFE731-5BR	Turbofans	Business Jet	40.5	102.9	91.1	231.4	4750
TFE731-20R	Turbofans	Business Jet	39.4	100.1	60.9	154.7	3650
TFE731-20AR	Turbofans	Business Jet	39.4	100.1	60.9	154.7	3650
TFE731-20BR	Turbofans	Business Jet	39.4	100.1	60.9	154.7	3650
TFE731-40	Turbofans	Business Jet / Military Trainer	39.4	100.1	60.9	154.7	4250
TFE731-40AR	Turbofans	Business Jet	39.4	100.1	60.9	154.7	4420
TFE731-50R	Turbofans	Business Jet	40.4	102.6	82.3	209.0	5000
TFE731-60	Turbofans	Business Jet	42.4	107.7	82.3	209.0	5000
HTF7000	Turbofans	Business Jet	44.1	112.0	96.8	245.9	6944
HTF7350B	Turbofans	Business Jet	44.1	112.0	89.9	228.3	7530
HTF7250G	Turbofans	Business Jet	44.1	112.0	89.9	228.3	7765
HTF7500E	Turbofans	Business Jet	43.9	111.5	89.9	228.3	7638
F124-GA-100	Turbofans	Military Trainer / Attack Aircraft	36.0	91.4	66.8	169.7	5890
F124-GA-200	Turbofans	Military Trainer / Attack Aircraft	36.0	91.4	102.1	259.3	5870
F125IN (dry)	Turbofans	Attack Aircraft	36.0	91.4	123.5	313.7	5760
F125IN (max afterburner)	Turbofans	Attack Aircraft	36.0	91.4	124.0	315.0	9080

CM = Centimeter
LBF = Pounds of Force

Efficiency
TFE731 Engine Still Going Strong at 50

Undoubtedly the TFE731 turbofan helped spur the growth of business aviation.

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